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Commit a0ca796c authored by Felix Fietkau's avatar Felix Fietkau Committed by Johannes Berg
Browse files

mac80211/minstrel_ht: do not sample actively used rates 



max_tp_rate2 and max_prob_rate tend to get used occasionally during
retransmission, which is more useful for the statistics than probing
with individual probe packets.

Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent bc96f242

net/mac80211/rc80211_minstrel_ht.c

+5 −2
Original line number Diff line number Diff line
@@ -648,10 +648,13 @@ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi) 
	/*

	 * Sampling might add some overhead (RTS, no aggregation)

	 * to the frame. Hence, don't use sampling for the currently

	 * used max TP rate.

	 * used rates.

	 */

	if (sample_idx == mi->max_tp_rate)

	if (sample_idx == mi->max_tp_rate ||

	    sample_idx == mi->max_tp_rate2 ||

	    sample_idx == mi->max_prob_rate)

		return -1;



	/*

	 * Do not sample if the probability is already higher than 95%

	 * to avoid wasting airtime.